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Explain the Sub-Culturing?
Microbiological studies require microorganisms in pure form, i.e., a single type of microorganisms should be present in a culture. Maintenance of these pure cultures in laboratory is must. Preparation and maintenance of these pure cultures can be achieved by transfer of culture from one medium to another or from their parent growth source to another. The procedure is called sub-culturing. This technique is of basic importance and should be carried out by practicing aseptic technique. The term picking off is used when transfer is made from solid to liquid media.
In the above sections we discussed in detail the fossil record of primates in general and more particularly those of apes and the humans. Despite the fact that in recent years a nu
Valve Replacement Replacement of the diseased valve is done. This is done biologic tissue valves or mechanical valves. Three types of biologic tissue valves are used. Aut
Matthew Meselson and Frank Stahl grew bacteria in media having either N14 or N15 for various numbers of cell divisions. DNA from the bacterial samples were isolated and spun within
The Jones family was caught in a fire but escaped. Unfortunately the father and daughter suffered burns. The father had second degree burns on his chest, abdomen, and both arms, an
Which organs are protected by (a) the skull, (b) the rib cage, (c) the vertebrae? a) The skull safe the brain, b) the rib cage safes the heart, lungs, liver and spleen,
Q. What is the significance of proteins for living beings? Proteins play an essential role in nearly all biological processes. Due to their variety they can suppose many divers
Regulation of Senescence Senescence is a part of a developmental sequence of events and has to be a controlled process. You must have seen that if you cut twigs having leaves
Meningocele In this the meninges protrude through the opening in the vertebrae generally in the lower back. The sac contains meninges and cerebrospinal fluid. The sac may
Q. Is the neural impulse generated by the stimulus that triggers the arch reflex restricted within the neurons of this circuit? This is obvious since the person that received t
Physical Stress - Temperature We are most familiar with the plants and other organisms that live at temperatures close to the temperature range in which we are adapted to live
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